EP1497876B1 - Complex lithium metal oxides with enhanced cycle life and safety and a process for preparation thereof - Google Patents
Complex lithium metal oxides with enhanced cycle life and safety and a process for preparation thereof Download PDFInfo
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- EP1497876B1 EP1497876B1 EP03717762A EP03717762A EP1497876B1 EP 1497876 B1 EP1497876 B1 EP 1497876B1 EP 03717762 A EP03717762 A EP 03717762A EP 03717762 A EP03717762 A EP 03717762A EP 1497876 B1 EP1497876 B1 EP 1497876B1
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- European Patent Office
- Prior art keywords
- complex lithium
- lithium metal
- metal oxides
- coating layer
- oxides
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- 229910021450 lithium metal oxide Inorganic materials 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000002360 preparation method Methods 0.000 title abstract description 4
- 229910000625 lithium cobalt oxide Inorganic materials 0.000 claims abstract description 41
- 239000007771 core particle Substances 0.000 claims abstract description 39
- 239000011247 coating layer Substances 0.000 claims abstract description 34
- IDSMHEZTLOUMLM-UHFFFAOYSA-N [Li].[O].[Co] Chemical class [Li].[O].[Co] IDSMHEZTLOUMLM-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000006182 cathode active material Substances 0.000 claims abstract description 17
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 15
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 13
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910001416 lithium ion Inorganic materials 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims description 21
- 238000000576 coating method Methods 0.000 claims description 19
- 238000010438 heat treatment Methods 0.000 claims description 17
- 239000011248 coating agent Substances 0.000 claims description 16
- 239000002904 solvent Substances 0.000 claims description 8
- 150000001875 compounds Chemical class 0.000 claims description 6
- 239000000725 suspension Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 150000004706 metal oxides Chemical group 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 229910052804 chromium Inorganic materials 0.000 claims description 4
- 229910017052 cobalt Inorganic materials 0.000 claims description 4
- 239000010941 cobalt Substances 0.000 claims description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 229910052791 calcium Inorganic materials 0.000 claims description 3
- BFZPBUKRYWOWDV-UHFFFAOYSA-N lithium;oxido(oxo)cobalt Chemical compound [Li+].[O-][Co]=O BFZPBUKRYWOWDV-UHFFFAOYSA-N 0.000 claims description 3
- 229910052749 magnesium Inorganic materials 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 2
- KRKNYBCHXYNGOX-UHFFFAOYSA-K Citrate Chemical compound [O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O KRKNYBCHXYNGOX-UHFFFAOYSA-K 0.000 claims description 2
- 229910052688 Gadolinium Inorganic materials 0.000 claims description 2
- 229910002651 NO3 Inorganic materials 0.000 claims description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 2
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 2
- 229910052796 boron Inorganic materials 0.000 claims description 2
- 238000001354 calcination Methods 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 229910052733 gallium Inorganic materials 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 239000003960 organic solvent Substances 0.000 claims description 2
- 229910052712 strontium Inorganic materials 0.000 claims description 2
- 229910052720 vanadium Inorganic materials 0.000 claims description 2
- 229910052725 zinc Inorganic materials 0.000 claims description 2
- 229910052726 zirconium Inorganic materials 0.000 claims description 2
- 229910032387 LiCoO2 Inorganic materials 0.000 claims 3
- 239000002245 particle Substances 0.000 claims 2
- -1 LiCoO2 Chemical class 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000001694 spray drying Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 239000003792 electrolyte Substances 0.000 abstract description 6
- 239000002994 raw material Substances 0.000 description 11
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 7
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 6
- 239000002002 slurry Substances 0.000 description 6
- 239000000843 powder Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 229910003005 LiNiO2 Inorganic materials 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000011888 foil Substances 0.000 description 3
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 3
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 3
- 229910052808 lithium carbonate Inorganic materials 0.000 description 3
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 2
- 229910002097 Lithium manganese(III,IV) oxide Inorganic materials 0.000 description 2
- 239000002033 PVDF binder Substances 0.000 description 2
- 239000006183 anode active material Substances 0.000 description 2
- UBEWDCMIDFGDOO-UHFFFAOYSA-N cobalt(II,III) oxide Inorganic materials [O-2].[O-2].[O-2].[O-2].[Co+2].[Co+3].[Co+3] UBEWDCMIDFGDOO-UHFFFAOYSA-N 0.000 description 2
- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- INHCSSUBVCNVSK-UHFFFAOYSA-L lithium sulfate Chemical compound [Li+].[Li+].[O-]S([O-])(=O)=O INHCSSUBVCNVSK-UHFFFAOYSA-L 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 2
- 238000007669 thermal treatment Methods 0.000 description 2
- 229910018626 Al(OH) Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910013937 LiCo0.95Al0.05O2 Inorganic materials 0.000 description 1
- 229910001290 LiPF6 Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000003618 dip coating Methods 0.000 description 1
- 239000002019 doping agent Substances 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000008240 homogeneous mixture Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 239000003021 water soluble solvent Substances 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G51/00—Compounds of cobalt
- C01G51/40—Cobaltates
- C01G51/42—Cobaltates containing alkali metals, e.g. LiCoO2
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- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G51/00—Compounds of cobalt
- C01G51/40—Cobaltates
- C01G51/42—Cobaltates containing alkali metals, e.g. LiCoO2
- C01G51/44—Cobaltates containing alkali metals, e.g. LiCoO2 containing manganese
-
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- C01G53/00—Compounds of nickel
- C01G53/40—Nickelates
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- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G53/00—Compounds of nickel
- C01G53/40—Nickelates
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- C01G53/44—Nickelates containing alkali metals, e.g. LiNiO2 containing manganese
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- H—ELECTRICITY
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- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/131—Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
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- H01M4/1391—Processes of manufacture of electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
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- H01M4/525—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
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- C01P2002/54—Solid solutions containing elements as dopants one element only
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- C01P2002/88—Crystal-structural characteristics defined by measured data other than those specified in group C01P2002/70 by thermal analysis data, e.g. TGA, DTA, DSC
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- C01P2004/00—Particle morphology
- C01P2004/80—Particles consisting of a mixture of two or more inorganic phases
- C01P2004/82—Particles consisting of a mixture of two or more inorganic phases two phases having the same anion, e.g. both oxidic phases
- C01P2004/84—Particles consisting of a mixture of two or more inorganic phases two phases having the same anion, e.g. both oxidic phases one phase coated with the other
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- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/40—Electric properties
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Definitions
- the present invention relates to cathode active materials for lithium or lithium ion secondary batteries and a method for preparation thereof.
- the present invention relates to a cathode active material that enhances high temperature storage properties, cycle life, and safety of the battery by forming an outer layer with amorphous complex lithium cobalt oxides on the surface of complex lithium metal oxides, which are used as the cathode active material, and a method for preparing the same cathode active material.
- LiNiO 2 has the highest discharge capacity, problems arise in applying this material to practical use due to difficulties in synthesis and thermal safety. LiMn 2 O 4 is relatively low in price and does not harm the environment, but cannot be used alone, since it has a small specific capacity. LiCoO 2 has been used commercially for it has a high battery voltage and excellent electrode characteristics. However, it has poor storage properties at high temperatures. In order to resolve these problems, much research has been performed. According to Japanese Unexamined Patent Publication No. Hei 11-317230 , the cycle life and safety of a battery have been enhanced by a metal oxide coating. In the LiNiO 2 system, structural safety is improved by use of several dopants. In addition, safety of the battery is improved by improving thermal safety. Safety and cycle life of the battery are also improved by adding an additive to an electrolyte. However, such improvements do not affect storage properties and cycle life at high temperatures.
- US 2001/016285 A1 discloses a positive active material for a rechargeable lithium battery comprising a LiCoO 2 core and a metal selected from the group consisting of A1, Mg, Sn, Ca, Ti and Mn, wherein the metal has a concentration gradient from the surface of the core to the center of the core.
- the present invention resolves the problems, which have been raised with respect to cycle life, safety and storage properties of a battery when a cathode active material is subject to room temperature and high temperatures.
- the present invention provides a cathode active material that improves cycle life, safety and high temperature storage properties of a lithium ion secondary battery.
- the present invention improves structural safety and electrochemical characteristics of the battery by forming a coating layer on the cathode active material with amorphous complex lithium cobalt oxides.
- the present invention relates to a method of reforming a surface by forming a coating layer on the surface of complex lithium metal oxides in order to achieve the above-mentioned object.
- This method for the preparation of the metal oxides comprises the following steps:
- the present invention provides a lithium or lithium ion secondary battery that uses complex lithium metal oxides prepared by the above method as a cathode active material.
- the present invention relates to obtaining a cathode active material that comprises core particles capable of absorbing, storing and emitting lithium ions, and a coating layer made of amorphous complex lithium metal oxides, which have low electric conductivity, and thus have low reactivity with an electrolyte.
- Complex lithium metal oxides which have a voltage of 3.0V or more for lithium, or complex lithium cobalt oxides (LiCoO 2 ) are used as core particles.
- the coating layer is amorphous oxides comprising lithium cobalt oxides of formula Li 1+x Co 1-x-y A y O 2 , wherein 0 ⁇ x ⁇ 0.1, and 0 ⁇ y ⁇ 0.5.
- A is selected from at least one of A1, B, Mg, Ca, Sr, Ba, Na, Cr, Gd, Ga, Ni, Co, Fe, V, Cr, Ti, Mn, Zr and Zn.
- the method for coating the surface of complex lithium metal oxides, which are the core particle, with amorphous complex lithium cobalt oxides can be carried out as follows.
- a homogeneously mixed solution is prepared by mixing the compounds, which will be used as raw material for forming amorphous complex lithium cobalt oxides, in a desired compositional ratio.
- at least one of carbonate, nitrate, oxalate, sulfate, acetate, citrate, chloride, hydroxide, and oxide of the above metallic element or a mixture thereof can be used as raw material for forming the coating layer.
- an organic solvent such as alcohol or a water-soluble solvent is preferably used to prepare a homogeneous mixture.
- the amount of the coating layer ranges between 0.01 ⁇ 10 mol % based on the core particles, assuming that the mixture for forming the coating layer is oxidized after thermal treatment.
- This coating method produces a slurry by adding a powder of complex lithium metal oxides, which are core particles, to a suspension (sol) of an organic solution or an aqueous solution of the compounds used as raw material for forming amorphous complex lithium cobalt oxides. By applying heat to the slurry during stirring by a stirrer, the compounds for forming amorphous complex lithium cobalt oxides are coated on the surface of the powder of complex lithium metal oxides during vaporization of the solvent.
- amorphous complex lithium cobalt oxides are formed on the surface.
- the flow rate of the gas ranges between 0.05 ⁇ 2.0 l /g ⁇ h (volume per weight and hour).
- the heat treatment can be carried out for 0.1 ⁇ 10 hours, and most preferably 1 ⁇ 5 hours.
- the period of time and temperature for the heat treatment can be adjusted within the above-mentioned ranges depending on the situation.
- a portion of the surface layer can be crystallized depending on the temperature of the heat treatment, and some elements may be doped on the surface of the core particle during the heat treatment.
- a suspension of an aqueous solution or an organic solution, in which a mixture of feedstocks for forming amorphous complex lithium cobalt oxides is dissolved is sprayed on the surface of the core particles made of complex lithium metal oxides, and then dried to form a coating.
- the suspension of a mixed solution is sprayed to form the coating.
- the coating is dried by adjusting the temperature of the flowing air.
- Dip coating is a more simplified coating method, in which complex lithium metal oxides (i.e., the core particles) are kept in a suspension of an organic solution or an aqueous solution in which dissolved feedstocks for forming amorphous complex lithium cobalt oxides during a predetermined time of period, are dried and coated.
- complex lithium metal oxides coated with amorphous complex lithium metal oxides are obtained.
- Li 2 CO 3 as a lithium feedstock and Co 3 O 4 as a cobalt feedstock were weighed in the molar equivalence ratio of Li:Co of 1.02:1. Ethanol was added thereto as a solvent.
- Li 2 CO 3 and Co 3 O 4 were ground together for 12 hours to be homogenized and then mixed.
- the mixture was dried for 12 hours in a dryer, and calcinated for 10 hours at 400°C. Then, the mixture was ground and mixed again, and subjected to heat treatment for 10 hours at 900°C.
- the core particles LiCoO 2 were obtained.
- the obtained core particles were coated with amorphous complex lithium cobalt oxides in the following manner.
- Li when forming an amorphous coating layer
- Co Co(CH 2 CO 2 ) 2 ⁇ 4H 2 O was used.
- the amount was adjusted in the equivalence ratio of 1.0:1.0.
- the above feedstocks were dissolved in the ethanol, and stirred for 30 minutes to form a mixture solution containing homogeneous metallic compounds.
- the amount of the mixture to be formed into a coating layer was adjusted to be 1 mol % for the core particles, assuming that all of the mixture is oxidized after heat treatment.
- a slurry was obtained by dispersing the obtained powder of the complex lithium cobalt oxide together with 10% graphite and 5% polyvinylidene fluoride (PVdF) binder in an n-methyl pyrrolidinone (NMP) solvent.
- NMP n-methyl pyrrolidinone
- the slurry was coated on an aluminum foil. By heating the foil coated with the slurry, the NMP solvent was vaporized and the foil coated with the slurry was dried. A pressure of 500 kg/cm 2 was applied to the dried electrode. Then, the electrode was compressed and cut into cells.
- a solution used as an electrolyte contains 1 mole of LiPF 6 dissolved in a solvent containing ethylene carbonate (EC) and ethylmethyl carbonate (EMC) in the ratio of 1:2 by volume.
- EC ethylene carbonate
- EMC ethylmethyl carbonate
- a half cell is prepared, wherein an electrode prepared in order to measure the cycle life and the high-rate discharge (C-rate) is a cathode, and a lithium metal is used as an anode.
- the voltage for charge and discharge ranges from 3 to 4.2V
- the cell was charged and discharged at 0.2C.
- the high-rate discharge the cell was charged and discharged several times at 0.2C. Then, the capacities of 0.1C, 0.2C, 0.5C, 1C and 2C were measured.
- Thermal safety of electrode active materials was tested at a rate of 0.5°/min by use of the DSC by applying an electrolyte to a cathode that was obtained by charging it to 4.2V, and then decomposing the battery. The above process was performed in a glove box in order to avoid any contact with air.
- Li 2 CO 3 and Co(OH) 3 (lithium and cobalt feedstocks, respectively), and Al(OH) 3 to dope A1 were used. At this time, they were weighed in the molar equivalence ratio of Li:Co:Al of 1.02:0.95:0.05. Then, these were mixed by adding ethanol as a solvent. By use of a ball mill, the mixture was ground together for 12 hours to be homogenized and then mixed. The mixture was dried for 12 hours in a drier, plasticized for 10 hours at 400C, and was ground and mixed again. Then, the mixture was subj ected to heat treatment for 10 hours at 900°C to give a core particle made of LiCo 0.95 Al 0.05 O 2 . The other conditions were the same as in Example 1.
- Example 1 The complex lithium cobalt oxides obtained in Example 1 were used as core particles.
- Li 2 SO 4 was used as the raw material of Li
- Co(CH 3 CO 2 ) 2 ⁇ 4H 2 O was used as the raw material of Co.
- the amount was adjusted to be in the molar equivalence ratio of 1.02:1.0.
- the process for forming the coating layer and the analysis of the characteristics thereof were performed under the same conditions as in Example 1.
- the complex lithium cobalt oxides obtained in Example 1 were used as core particles.
- LiCH 3 CO 2 ⁇ 2H 2 O was used as the raw material of Li.
- Al(CH 3 CO 2 ) 3 was used as the raw material of Al, and Co(CH 3 CO 2 ) 2 ⁇ 4H 2 O was used as the raw material of Co.
- the amount was adjusted in the molar equivalence ratio of Li:Co:Al of 1.02:0.95:0.05.
- the process for forming the coating layer and the analysis of the characteristics thereof were performed under the same conditions as in Example 1.
- the complex lithium cobalt oxides obtained in Example 1 were used as core particles.
- LiCH 3 CO 2 ⁇ 2H 2 O was used as the raw material of Li.
- Al(CH 3 CO 2 ) 3 was used as the raw material of Al, and Co(CH 3 CO 2 ) 2 ⁇ 4H 2 O was used as the raw material of Co.
- the amount was adjusted to be in the molar equivalence ratio of Li:Co:Al of 1.02:0.9:0.1.
- the process for forming the coating layer and the analysis of the characteristics thereof were performed under the same conditions as in Example 1.
- Example 1 was repeated, except that complex lithium cobalt oxides (LiCoO 2 :C-10H, Japan Chem.) were used.
- Example 1 was repeated, except that the amount of the coating layer had a molar ratio of 5 mol % for the core particles.
- Example 1 was repeated, except that complex lithium cobalt oxides (LiCoO 2 :C-10H, Japan Chem.) were used as the core particles, and that the core particles, which were coated with a coating layer having the same composition as that of Example 1, were subject to heat treatment in air for 3 hours at 500°C.
- complex lithium cobalt oxides LiCoO 2 :C-10H, Japan Chem.
- Example 1 was repeated without coating the core particle obtained in Example 1.
- Example 1 was repeated without coating the core particle obtained in Example 2.
- Example 1 Capacity in Cycle and Discharge Retention Rate After the Completion of Cycles First charge capacity (mAh/g) First discharge capacity (mAh/g) First efficiency (%) After 50 cycles Discharge rate (mAh/g) Discharge retention rate (mAh/g)
- Example 1 149.8 144.2 96.3 135.5 94.0
- Example 2 149.5 140.8 94.2 135.2 96.0
- Example 3 149.8 142.5 95.1 136.5 95.6
- Example 4 148.2 142.1 95.9 136.4 96.0
- Example 5 149.5 144.3 96.5 136.4 94.5
- Example 6 149.5 143.2 95.8 135.3 94.5
- Example 7 147.8 140.5 95.1 134.5 95.6
- Example 8 149.2 143.2 96.0 135.2 94.4 Comp.
- Example 1 149.8 143.2 95.6 130.4 91.1 Comp.
- Example 2 149.5 141.3 94.5 131.2 92.9 Table 2 High-Rate Discharge in the Voltage Range of 3 ⁇ 4.2 V 0.1C per capacity (%) 0.1C 0.2C 0.5C 1C 2C
- Example 1 100 99.1 96.8 95.1 91.3
- Example 2 100 99.2 96.6 94.7 92.1
- Example 3 100 99.1 96.4 95.2 91.7
- Example 4 100 99.3 96.7 95.6 91.5
- Example 5 100 99.2 97.2 94.8 91.6
- Example 6 100 99.1 95.4 95.2 91.3
- Example 7 100 99 95.8 94.1 91.7
- Example 8 100 99.2 94.2 95.1 92.1 Comp.
- Example 1 100 98.7 93.7 91.1 87.4
- Example 2 100 98.5 94.5 90.2 88.2
- Table 1 shows that the coated core particle is superior to those that are not coated with respect to the cycle life.
- Table 2 shows that the coated surface is superior in high-rate discharge.
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Abstract
Description
- The present invention relates to cathode active materials for lithium or lithium ion secondary batteries and a method for preparation thereof. In particular, the present invention relates to a cathode active material that enhances high temperature storage properties, cycle life, and safety of the battery by forming an outer layer with amorphous complex lithium cobalt oxides on the surface of complex lithium metal oxides, which are used as the cathode active material, and a method for preparing the same cathode active material.
- In the lithium ion secondary battery, safety and high temperature storage properties, as well as the cycle life at room temperature and at high temperatures, are essential to the application of the battery. The factors that most affect these elements are the characteristics of the cathode active materials and anode active materials. Recently, there has been much development in the field of anode active materials, while there are many problems to be improved upon in the field of cathode active materials. In particular, safety and high temperature storage properties of a battery depend on cathode active materials. As standard cathode active materials for the above lithium ion secondary battery, LiCoO2, LiNiO2, and LiMn2O4 have been known. Although LiNiO2 has the highest discharge capacity, problems arise in applying this material to practical use due to difficulties in synthesis and thermal safety. LiMn2O4 is relatively low in price and does not harm the environment, but cannot be used alone, since it has a small specific capacity. LiCoO2 has been used commercially for it has a high battery voltage and excellent electrode characteristics. However, it has poor storage properties at high temperatures. In order to resolve these problems, much research has been performed. According to Japanese Unexamined Patent Publication No.
Hei 11-317230 -
US 2001/016285 A1 discloses a positive active material for a rechargeable lithium battery comprising a LiCoO2 core and a metal selected from the group consisting of A1, Mg, Sn, Ca, Ti and Mn, wherein the metal has a concentration gradient from the surface of the core to the center of the core. - The present invention resolves the problems, which have been raised with respect to cycle life, safety and storage properties of a battery when a cathode active material is subject to room temperature and high temperatures. In order to resolve these problems, the present invention provides a cathode active material that improves cycle life, safety and high temperature storage properties of a lithium ion secondary battery. In order to obtain such a cathode active material, the present invention improves structural safety and electrochemical characteristics of the battery by forming a coating layer on the cathode active material with amorphous complex lithium cobalt oxides.
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Fig. 1 is a graph showing charge and discharge characteristics of complex lithium cobalt oxides that form an amorphous coating layer on a core particle LiCoO2. The outer coating layer in the prior art deteriorated in capacity, since it did not contain lithium. However, the present invention prevents such capacity deterioration occurring after coating, by forming amorphous complex lithium metal oxides on the outer layer. The amorphous lithium metal oxides have reversible capacity. -
Fig. 2 is a graph showing discharge curves in their cycles. IR drop of the discharge curves in their cycles is significantly reduced. -
Fig. 3 is a graph showing the results of the analysis of a calorific value of the complex lithium cobalt oxides performed by use of a Differential Scanning Calorimeter (DSC). The calorific value is based on the temperature of complex lithium cobalt oxides obtained by decomposing a battery after charging the battery up to 4.2V When coating was performed, the initial temperature upon heat generation was increased and the calorific value was decreased. Therefore, it is possible to improve safety of the battery by inhibiting ignition of the battery, which is caused by heat generation at the cathode. - The present invention relates to a method of reforming a surface by forming a coating layer on the surface of complex lithium metal oxides in order to achieve the above-mentioned object. This method for the preparation of the metal oxides comprises the following steps:
- 1) providing complex lithium metal oxides;
- 2) after thermal treatment, providing a mixture of coating layer feedstocks which form a coating layer made of amorphous complex lithium cobalt oxides;
- 3) coating the complex lithium metal oxides of step 1) with the mixture of step 2); and
- 4) calcinating the coated complex lithium metal oxides of step 3).
- In addition, the present invention provides a lithium or lithium ion secondary battery that uses complex lithium metal oxides prepared by the above method as a cathode active material.
- The present invention relates to obtaining a cathode active material that comprises core particles capable of absorbing, storing and emitting lithium ions, and a coating layer made of amorphous complex lithium metal oxides, which have low electric conductivity, and thus have low reactivity with an electrolyte. Complex lithium metal oxides, which have a voltage of 3.0V or more for lithium, or complex lithium cobalt oxides (LiCoO2) are used as core particles. The coating layer is amorphous oxides comprising lithium cobalt oxides of formula Li1+xCo1-x-yAyO2, wherein 0≤ x ≤0.1, and 0≤ y ≤0.5. A is selected from at least one of A1, B, Mg, Ca, Sr, Ba, Na, Cr, Gd, Ga, Ni, Co, Fe, V, Cr, Ti, Mn, Zr and Zn.
- The method for coating the surface of complex lithium metal oxides, which are the core particle, with amorphous complex lithium cobalt oxides can be carried out as follows. A homogeneously mixed solution is prepared by mixing the compounds, which will be used as raw material for forming amorphous complex lithium cobalt oxides, in a desired compositional ratio. At this time, at least one of carbonate, nitrate, oxalate, sulfate, acetate, citrate, chloride, hydroxide, and oxide of the above metallic element or a mixture thereof can be used as raw material for forming the coating layer. In particular, an organic solvent such as alcohol or a water-soluble solvent is preferably used to prepare a homogeneous mixture. At step 2), the amount of the coating layer ranges between 0.01∼10 mol % based on the core particles, assuming that the mixture for forming the coating layer is oxidized after thermal treatment. This coating method produces a slurry by adding a powder of complex lithium metal oxides, which are core particles, to a suspension (sol) of an organic solution or an aqueous solution of the compounds used as raw material for forming amorphous complex lithium cobalt oxides. By applying heat to the slurry during stirring by a stirrer, the compounds for forming amorphous complex lithium cobalt oxides are coated on the surface of the powder of complex lithium metal oxides during vaporization of the solvent. By subjecting the heat treatment to the coated complex lithium metal oxide powder at a temperature ranging from 200°C∼800°C in the presence of a mixed gas containing air or 10% O2, amorphous complex lithium cobalt oxides are formed on the surface. At this time, the flow rate of the gas ranges between 0.05∼2.0 ℓ /g·h (volume per weight and hour). The heat treatment can be carried out for 0.1∼10 hours, and most preferably 1∼5 hours. The period of time and temperature for the heat treatment can be adjusted within the above-mentioned ranges depending on the situation. A portion of the surface layer can be crystallized depending on the temperature of the heat treatment, and some elements may be doped on the surface of the core particle during the heat treatment.
- In another coating method, a suspension of an aqueous solution or an organic solution, in which a mixture of feedstocks for forming amorphous complex lithium cobalt oxides is dissolved, is sprayed on the surface of the core particles made of complex lithium metal oxides, and then dried to form a coating. By floating and fluidizing the core particles in the air, the suspension of a mixed solution is sprayed to form the coating. At the same time, the coating is dried by adjusting the temperature of the flowing air. By treating the dried coating with heat under the above-mentioned conditions, complex lithium metal oxides coated with amorphous complex lithium cobalt oxides are obtained.
- Dip coating is a more simplified coating method, in which complex lithium metal oxides (i.e., the core particles) are kept in a suspension of an organic solution or an aqueous solution in which dissolved feedstocks for forming amorphous complex lithium cobalt oxides during a predetermined time of period, are dried and coated. By subjecting the coating to the heat treatment under the above-mentioned conditions, complex lithium metal oxides coated with amorphous complex lithium metal oxides are obtained.
- The present invention will be explained on the basis of examples. The following working examples are merely to illustrate the present invention, and not to limit the present invention.
- In order to prepare core particles made of complex lithium metal oxides, Li2CO3 as a lithium feedstock and Co3O4 as a cobalt feedstock, were weighed in the molar equivalence ratio of Li:Co of 1.02:1. Ethanol was added thereto as a solvent. By use of a ball mill, Li2CO3 and Co3O4 were ground together for 12 hours to be homogenized and then mixed. The mixture was dried for 12 hours in a dryer, and calcinated for 10 hours at 400°C. Then, the mixture was ground and mixed again, and subjected to heat treatment for 10 hours at 900°C. As a result, the core particles LiCoO2 were obtained. The obtained core particles were coated with amorphous complex lithium cobalt oxides in the following manner. In order to provide Li when forming an amorphous coating layer, LiCH3CO2·2H2O was used. In order to provide Co, Co(CH2CO2)2·4H2O was used. The amount was adjusted in the equivalence ratio of 1.0:1.0. The above feedstocks were dissolved in the ethanol, and stirred for 30 minutes to form a mixture solution containing homogeneous metallic compounds. The amount of the mixture to be formed into a coating layer was adjusted to be 1 mol % for the core particles, assuming that all of the mixture is oxidized after heat treatment. After the mixture to be formed into an amorphous coating layer and the complex lithium cobalt oxides to be formed into core particles were mixed, drying of the solvent and coating of the surface were performed at the same time by subjecting the mixture to heat treatment during stirring. The powder of the coated complex lithium cobalt oxides was subjected to heat treatment by a tube-type furnace at the temperature of 300°C for 3 hours. The presence of heat treatment was performed in air, and the flow rate of air was 0.1 l/gh.
- A slurry was obtained by dispersing the obtained powder of the complex lithium cobalt oxide together with 10% graphite and 5% polyvinylidene fluoride (PVdF) binder in an n-methyl pyrrolidinone (NMP) solvent. The slurry was coated on an aluminum foil. By heating the foil coated with the slurry, the NMP solvent was vaporized and the foil coated with the slurry was dried. A pressure of 500 kg/cm2 was applied to the dried electrode. Then, the electrode was compressed and cut into cells. A solution used as an electrolyte contains 1 mole of LiPF6 dissolved in a solvent containing ethylene carbonate (EC) and ethylmethyl carbonate (EMC) in the ratio of 1:2 by volume.
- A half cell is prepared, wherein an electrode prepared in order to measure the cycle life and the high-rate discharge (C-rate) is a cathode, and a lithium metal is used as an anode. The voltage for charge and discharge ranges from 3 to 4.2V In order to measure the cycle life, the cell was charged and discharged at 0.2C. In order to measure the high-rate discharge, the cell was charged and discharged several times at 0.2C. Then, the capacities of 0.1C, 0.2C, 0.5C, 1C and 2C were measured. Thermal safety of electrode active materials was tested at a rate of 0.5°/min by use of the DSC by applying an electrolyte to a cathode that was obtained by charging it to 4.2V, and then decomposing the battery. The above process was performed in a glove box in order to avoid any contact with air.
- In order to prepare complex lithium metal oxides used as core particles, Li2CO3 and Co(OH) 3 (lithium and cobalt feedstocks, respectively), and Al(OH) 3 to dope A1 were used. At this time, they were weighed in the molar equivalence ratio of Li:Co:Al of 1.02:0.95:0.05. Then, these were mixed by adding ethanol as a solvent. By use of a ball mill, the mixture was ground together for 12 hours to be homogenized and then mixed. The mixture was dried for 12 hours in a drier, plasticized for 10 hours at 400C, and was ground and mixed again. Then, the mixture was subj ected to heat treatment for 10 hours at 900°C to give a core particle made of LiCo0.95Al0.05O2. The other conditions were the same as in Example 1.
- The complex lithium cobalt oxides obtained in Example 1 were used as core particles. In order to form an amorphous oxide coating layer, Li2SO4 was used as the raw material of Li, and Co(CH3CO2)2·4H2O was used as the raw material of Co. The amount was adjusted to be in the molar equivalence ratio of 1.02:1.0. The process for forming the coating layer and the analysis of the characteristics thereof were performed under the same conditions as in Example 1.
- The complex lithium cobalt oxides obtained in Example 1 were used as core particles. In order to form an amorphous oxide coating layer, LiCH3CO2·2H2O was used as the raw material of Li. Al(CH3CO2)3 was used as the raw material of Al, and Co(CH3CO2)2·4H2O was used as the raw material of Co. The amount was adjusted in the molar equivalence ratio of Li:Co:Al of 1.02:0.95:0.05. The process for forming the coating layer and the analysis of the characteristics thereof were performed under the same conditions as in Example 1.
- The complex lithium cobalt oxides obtained in Example 1 were used as core particles. In order to form an amorphous oxide coating layer, LiCH3CO2·2H2O was used as the raw material of Li. Al(CH3CO2)3 was used as the raw material of Al, and Co(CH3CO2)2·4H2O was used as the raw material of Co. The amount was adjusted to be in the molar equivalence ratio of Li:Co:Al of 1.02:0.9:0.1. The process for forming the coating layer and the analysis of the characteristics thereof were performed under the same conditions as in Example 1.
- Example 1 was repeated, except that complex lithium cobalt oxides (LiCoO2:C-10H, Japan Chem.) were used.
- Example 1 was repeated, except that the amount of the coating layer had a molar ratio of 5 mol % for the core particles.
- Example 1 was repeated, except that complex lithium cobalt oxides (LiCoO2:C-10H, Japan Chem.) were used as the core particles, and that the core particles, which were coated with a coating layer having the same composition as that of Example 1, were subject to heat treatment in air for 3 hours at 500°C.
- Example 1 was repeated without coating the core particle obtained in Example 1.
- Example 1 was repeated without coating the core particle obtained in Example 2.
- On the basis of Examples 1-8 and Comparative Examples 1 and 2, the results of the experimentation performed with respect to the capacity (i.e., cycle life) in their cycles are shown in Table 1. Table 2 shows the results of the experimentation performed with respect to the high-rate discharge in the voltage range of 3∼4.2 V.
Table 1 Capacity in Cycle and Discharge Retention Rate After the Completion of Cycles First charge capacity (mAh/g) First discharge capacity (mAh/g) First efficiency (%) After 50 cycles Discharge rate (mAh/g) Discharge retention rate (mAh/g) Example 1 149.8 144.2 96.3 135.5 94.0 Example 2 149.5 140.8 94.2 135.2 96.0 Example 3 149.8 142.5 95.1 136.5 95.6 Example 4 148.2 142.1 95.9 136.4 96.0 Example 5 149.5 144.3 96.5 136.4 94.5 Example 6 149.5 143.2 95.8 135.3 94.5 Example 7 147.8 140.5 95.1 134.5 95.6 Example 8 149.2 143.2 96.0 135.2 94.4 Comp. Example 1 149.8 143.2 95.6 130.4 91.1 Comp. Example 2 149.5 141.3 94.5 131.2 92.9 Table 2 High-Rate Discharge in the Voltage Range of 3∼4.2 V 0.1C per capacity (%) 0.1C 0.2C 0.5C 1C 2C Example 1 100 99.1 96.8 95.1 91.3 Example 2 100 99.2 96.6 94.7 92.1 Example 3 100 99.1 96.4 95.2 91.7 Example 4 100 99.3 96.7 95.6 91.5 Example 5 100 99.2 97.2 94.8 91.6 Example 6 100 99.1 95.4 95.2 91.3 Example 7 100 99 95.8 94.1 91.7 Example 8 100 99.2 94.2 95.1 92.1 Comp. Example 1 100 98.7 93.7 91.1 87.4 Comp. Example 2 100 98.5 94.5 90.2 88.2 - Table 1 shows that the coated core particle is superior to those that are not coated with respect to the cycle life. Table 2 shows that the coated surface is superior in high-rate discharge.
- When the complex lithium metal oxides having enhanced cycle life and safety at high temperatures are used as a cathode active material of a lithium or lithium ion secondary battery, cycle life, safety and high temperature storage properties of the battery can be further improved.
Claims (10)
- Coated complex lithium metal oxides in which the complex lithium metal oxide core particles are coated with amorphous complex lithium cobalt oxides, the core particles are complex lithium metal oxides having a voltage of 3.0V or more for lithium or complex lithium cobalt oxides such as LiCoO2, a coating layer of the core particles is amorphous oxides comprising complex lithium cobalt oxides of formula Li1+xCo1-x-yAyO2, wherein 0≤x≤0.1, 0≤y≤ 0.5, and A is at least one selected from the group consisting of Al, B, Mg, Ca, Sr, Ba, Na, Cr, Gd, Ga, Ni, Co, Fe, V, Cr, Ti, Mn, Zr and Zn.
- The coated complex lithium metal oxides according to claim 1, wherein the core particles are cobalt based particles such as LiCoO2 and complex lithium metal oxides that have a voltage of 3.0V or more for lithium and/or a compound doped with at least one metal.
- The coated complex lithium metal oxides according to claim 1, wherein the amount of coating layer has a mole ratio of 0.1 to 10 mol %, assuming that the coating layer is oxidized after being subjected to heat treatment.
- A method for producing the complex lithium metal oxides according to claim 1, comprising the steps of:1) providing complex lithium metal oxide core particles;2) providing a mixture of coating layer feedstocks which form amorphous complex lithium cobalt oxides;3) coating the complex lithium metal oxides of step 1) with the mixture of step 2); and4) calcinating the coated complex lithium metal oxides of step 3).
- The method according to claim 4, wherein in the step 1), the core particles are cobalt based particles such as LiCoO2 and complex lithium metal oxides that have a voltage of 3.0V or more for lithium and/or a compound doped with at least one metal.
- The method according to claim 4, wherein in the step 2), the feedstocks of amorphous complex lithium cobalt oxide forming the coating layer is at least one selected from carbonate, nitrate, oxalate, sulfate, acetate, citrate, chloride, hydroxide, and oxide of the elements forming the coating layer, and the solvent is water or an organic solvent.
- The method according to claim 4, wherein in the step 2), the amount of coating layer has a mole ratio of 0.1 to 10 mol %, assuming that the coating layer is oxidized after being subjected to heat treatment.
- The method according to claim 4, wherein in the step 3), the coating is carried out by spray drying the mixture solution to be formed into a coating layer to the core particles after fluidizing the core particles in the air; forming a suspension formed of the mixture of the core particles and feedstocks of the coating layer followed by applying heated air while stirring; or keeping the core particles in a suspension of the mixture of the coating layer feedstock for a predetermined period of time and then drying to form a coating.
- The method according to claim 4, wherein in the step 4), the heat treatment for forming the amorphous complex lithium cobalt oxide onto the surface of the complex lithium metal oxides core particle is carried out at a temperature of between 200°e and 800°C for 0.1 to 10 hours.
- Use of complex lithium metal oxides defined in claim 1 as a cathode active material in a lithium or lithium ion secondary battery.
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Families Citing this family (82)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI233231B (en) * | 2003-12-25 | 2005-05-21 | Ind Tech Res Inst | Cathode material with nano-oxide layer on the surface and the produce method |
US7608332B2 (en) * | 2004-06-14 | 2009-10-27 | Industrial Technology Research Institute | Cathode material particle comprising of plurality of cores of coated grains |
JP2006092820A (en) * | 2004-09-22 | 2006-04-06 | Sanyo Electric Co Ltd | Cathode active material for nonaqueous electrolyte secondary battery, cathode, and the nonaqueous electrolyte secondary battery |
US7709149B2 (en) * | 2004-09-24 | 2010-05-04 | Lg Chem, Ltd. | Composite precursor for aluminum-containing lithium transition metal oxide and process for preparation of the same |
JP4582579B2 (en) * | 2004-12-07 | 2010-11-17 | Agcセイミケミカル株式会社 | Positive electrode material for lithium secondary battery |
US7811707B2 (en) | 2004-12-28 | 2010-10-12 | Boston-Power, Inc. | Lithium-ion secondary battery |
US20080008933A1 (en) | 2005-12-23 | 2008-01-10 | Boston-Power, Inc. | Lithium-ion secondary battery |
JP4739780B2 (en) * | 2005-03-11 | 2011-08-03 | 三洋電機株式会社 | Non-aqueous electrolyte battery |
CN1855587B (en) * | 2005-04-28 | 2010-05-05 | 比亚迪股份有限公司 | Battery anode preparation method and preparation method of lithium ion batteries using the battery anode |
US8445129B2 (en) * | 2005-05-27 | 2013-05-21 | Sony Corporation | Cathode active material, method of manufacturing it, cathode, and battery |
CN101263396B (en) | 2005-07-14 | 2011-04-27 | 波士顿电力公司 | Control electronics for Li-ion batteries |
JP4993891B2 (en) * | 2005-09-22 | 2012-08-08 | 三洋電機株式会社 | Nonaqueous electrolyte secondary battery |
CN101361210B (en) | 2005-12-02 | 2014-11-26 | A123系统公司 | Amorphous and partially amorphous nanoscale ion storage materials |
CN102306768B (en) | 2006-03-20 | 2015-04-15 | 株式会社Lg化学 | Method for preparation of stoichiometric lithium cobalt oxide |
KR100932256B1 (en) * | 2006-03-20 | 2009-12-16 | 주식회사 엘지화학 | High-performance cathode material for lithium secondary battery |
TWI426678B (en) | 2006-06-28 | 2014-02-11 | Boston Power Inc | Electronics with multiple charge rate, battery packs, methods of charging a lithium ion charge storage power supply in an electronic device and portable computers |
US8568611B2 (en) | 2007-01-25 | 2013-10-29 | Massachusetts Institute Of Technology | Oxide coatings on lithium oxide particles |
JP4715830B2 (en) * | 2007-10-19 | 2011-07-06 | ソニー株式会社 | Positive electrode active material, positive electrode and non-aqueous electrolyte secondary battery |
CN101436666B (en) * | 2007-11-14 | 2012-07-04 | 肇庆市风华锂电池有限公司 | Anode material of lithium ion cell and preparation method thereof |
CN101471441B (en) * | 2007-12-27 | 2011-07-06 | 比亚迪股份有限公司 | Active substance of lithium ion battery anode and preparation method thereof |
JP2009193745A (en) * | 2008-02-13 | 2009-08-27 | Sony Corp | Method for manufacturing positive electrode active material |
KR101059755B1 (en) * | 2009-04-09 | 2011-08-26 | 주식회사 엘지화학 | Cathode Active Material for Lithium Secondary Battery |
WO2010147389A2 (en) | 2009-06-17 | 2010-12-23 | 주식회사 엘지화학 | Positive electrode active material for lithium secondary battery |
CN102484228B (en) | 2009-09-01 | 2016-10-19 | 波士顿电力公司 | Large-sized battery system and the method for assembling |
KR100986755B1 (en) * | 2009-12-29 | 2010-10-08 | 김우진 | Apparatus for rotating nozzle and fountain having the same |
CN102237524B (en) * | 2010-04-29 | 2015-11-25 | 深圳市比克电池有限公司 | The acid of Surface coating cobalt lithium, preparation method and lithium ion battery |
JP2012028231A (en) * | 2010-07-26 | 2012-02-09 | Samsung Electronics Co Ltd | Solid lithium ion secondary battery |
WO2012147877A1 (en) * | 2011-04-28 | 2012-11-01 | Agcセイミケミカル株式会社 | Surface-modified lithium-containing compound oxide for positive electrode active substance of lithium ion secondary cell and method for producing same |
US10044035B2 (en) | 2011-06-17 | 2018-08-07 | Umicore | Lithium cobalt oxide based compounds with a cubic secondary phase |
US10170763B2 (en) | 2011-06-17 | 2019-01-01 | Umicore | Lithium metal oxide particles coated with a mixture of the elements of the core material and one or more metal oxides |
CN103733392A (en) * | 2011-07-29 | 2014-04-16 | 三洋电机株式会社 | Positive electrode active substance for nonaqueous electrolyte secondary cell, method for producing same, positive electrode for nonaqueous electrolyte secondary cell using positive electrode active substance, and nonaqueous electrolyte secondary cell |
EP2634148B1 (en) * | 2012-03-01 | 2015-04-01 | GS Yuasa International Ltd. | Active material for non-aqueous electrolyte secondary battery, method for production of the active material, electrode for non-aqueous electrolyte secondary battery and non-aqueous electrolyte secondary battery |
JP6242401B2 (en) * | 2012-12-14 | 2017-12-06 | ユミコア | Lithium metal oxide particles coated with a core material element and a mixture of one or more metal oxides |
US10115962B2 (en) * | 2012-12-20 | 2018-10-30 | Envia Systems, Inc. | High capacity cathode material with stabilizing nanocoatings |
KR101785266B1 (en) * | 2013-01-18 | 2017-11-06 | 삼성에스디아이 주식회사 | composit cathode active material, cathode and lithium battery containing the material, and preparation method thereof |
CN103199232B (en) * | 2013-03-06 | 2015-05-13 | 宁德新能源科技有限公司 | Surface-modified lithium titanate and preparation method thereof |
WO2015026121A1 (en) * | 2013-08-19 | 2015-02-26 | 주식회사 엘지화학 | Lithium cobalt-based complex oxide having good lifespan properties, and secondary battery anode active material including same |
JP6034265B2 (en) * | 2013-09-12 | 2016-11-30 | トヨタ自動車株式会社 | Active material composite powder, lithium battery and method for producing the same |
KR102209822B1 (en) * | 2014-01-28 | 2021-01-29 | 삼성에스디아이 주식회사 | Cathode, lithium battery containing cathode, and preparation method thereof |
JP2016033902A (en) | 2014-07-31 | 2016-03-10 | ソニー株式会社 | Positive electrode active material, positive electrode and battery |
JP2016033901A (en) | 2014-07-31 | 2016-03-10 | ソニー株式会社 | Positive electrode active material, positive electrode and battery |
US9716265B2 (en) * | 2014-08-01 | 2017-07-25 | Apple Inc. | High-density precursor for manufacture of composite metal oxide cathodes for Li-ion batteries |
KR101758992B1 (en) | 2014-10-02 | 2017-07-17 | 주식회사 엘지화학 | Positive electrode active material for lithium secondary battery, method for preparing the same, and lithium secondary battery comprising the same |
KR101787199B1 (en) | 2014-10-02 | 2017-10-18 | 주식회사 엘지화학 | Positive electrode active material for lithium secondary battery, method for preparing the same, and lithium secondary battery comprising the same |
KR101762508B1 (en) | 2014-10-02 | 2017-07-27 | 주식회사 엘지화학 | Positive electrode active material for lithium secondary battery, method for preparing the same, and lithium secondary battery comprising the same |
KR101777466B1 (en) * | 2014-10-02 | 2017-09-11 | 주식회사 엘지화학 | Positive electrode active material for lithium secondary battery, method for preparing the same, and lithium secondary battery comprising the same |
KR101827055B1 (en) | 2014-10-28 | 2018-02-07 | 주식회사 엘지화학 | Positive electrode active material for lithium secondary battery, method for preparing the same, and lithium secondary battery comprising the same |
KR102292385B1 (en) | 2014-11-19 | 2021-08-23 | 삼성에스디아이 주식회사 | Positive active material for rechargeable lithium battery, method of preparing the same, and rechargeable lithium battery including the same |
CN107534126B (en) | 2015-01-15 | 2021-08-17 | 珍拉布斯能源有限公司 | Positive active material with composite coating for high energy density secondary battery and corresponding process |
KR101913906B1 (en) | 2015-06-17 | 2018-10-31 | 주식회사 엘지화학 | Positive electrode active material for secondary battery, method for preparing the same, and secondary battery comprising the same |
JP6281545B2 (en) | 2015-09-14 | 2018-02-21 | トヨタ自動車株式会社 | Method for producing active material composite powder |
EP3350865B1 (en) | 2015-09-16 | 2020-02-12 | Umicore | Lithium battery containing cathode material and electrolyte additives for high voltage application |
JP6634966B2 (en) * | 2015-09-25 | 2020-01-22 | 住友金属鉱山株式会社 | Positive electrode for non-aqueous electrolyte secondary battery, positive electrode material used therefor, secondary battery using the same, and method of manufacturing positive electrode for non-aqueous electrolyte secondary battery |
KR101913897B1 (en) | 2015-09-30 | 2018-12-28 | 주식회사 엘지화학 | Positive electrode active material for secondary battery and secondary battery comprising the same |
KR102006207B1 (en) | 2015-11-30 | 2019-08-02 | 주식회사 엘지화학 | Positive electrode active material for secondary battery and secondary battery comprising the same |
US10283764B2 (en) | 2015-11-30 | 2019-05-07 | Lg Chem, Ltd. | Positive electrode active material for secondary battery and secondary battery including same |
US10763497B2 (en) | 2015-11-30 | 2020-09-01 | Lg Chem, Ltd. | Positive electrode active material for secondary battery, and secondary battery comprising the same |
KR102004457B1 (en) | 2015-11-30 | 2019-07-29 | 주식회사 엘지화학 | Positive electrode active material for secondary battery and secondary battery comprising the same |
KR101927295B1 (en) | 2015-11-30 | 2018-12-10 | 주식회사 엘지화학 | Positive electrode active material for secondary battery and secondary battery comprising the same |
KR102059978B1 (en) | 2015-11-30 | 2019-12-30 | 주식회사 엘지화학 | Positive electrode active material for secondary battery and secondary battery comprising the same |
KR101937899B1 (en) | 2015-12-23 | 2019-01-14 | 주식회사 엘지화학 | Positive electrode active material for secondary battery and secondary battery comprising the same |
KR101980103B1 (en) * | 2016-03-03 | 2019-05-21 | 주식회사 엘지화학 | Positive electrode active material for lithium secondary battery and method for preparing the same |
JP6723545B2 (en) | 2016-03-04 | 2020-07-15 | エルジー・ケム・リミテッド | Positive electrode active material for secondary battery, method for producing the same, and secondary battery including the same |
KR101937896B1 (en) | 2016-03-04 | 2019-01-14 | 주식회사 엘지화학 | Precursor of positive electrode active material for secondary battery and positive electrode active material prepared by the same |
US10164256B2 (en) | 2016-03-14 | 2018-12-25 | Apple Inc. | Cathode active materials for lithium-ion batteries |
KR102120271B1 (en) * | 2016-09-01 | 2020-06-08 | 주식회사 엘지화학 | Positive Electrode Active Material Comprising High-voltage Lithium Cobalt Oxide Having Doping element for Lithium Secondary Battery and Method of Manufacturing the Same |
WO2018057584A1 (en) | 2016-09-20 | 2018-03-29 | Apple Inc. | Cathode active materials having improved particle morphologies |
WO2018057621A1 (en) | 2016-09-21 | 2018-03-29 | Apple Inc. | Surface stabilized cathode material for lithium ion batteries and synthesizing method of the same |
KR101790890B1 (en) * | 2016-09-23 | 2017-10-26 | 주식회사 엘지화학 | LCO type lithium composite coated with lithium rich antiperovskite compounds, preparation method thereof, positive active material and lithium secondary battery comprising the same |
CN109314238B (en) * | 2016-12-21 | 2022-04-01 | 株式会社Lg化学 | Metal-doped positive electrode active material for high voltage |
KR102448947B1 (en) | 2017-01-26 | 2022-09-29 | 주식회사 엘지에너지솔루션 | Positive electrode active material for secondary battery and method for preparing the same |
US11038159B2 (en) | 2017-01-31 | 2021-06-15 | Lg Chem, Ltd. | Positive electrode active material for lithium secondary battery including lithium cobalt oxide having core-shell structure, method for producing the same, and positive electrode and secondary battery including the positive electrode active material |
CN109643794B (en) | 2017-02-02 | 2021-11-23 | 株式会社Lg化学 | Positive electrode active material for secondary battery and method for preparing same |
KR102120392B1 (en) | 2017-02-14 | 2020-06-08 | 주식회사 엘지화학 | Positive electrode active material for secondary battery and method for preparing the same |
DE102018208172A1 (en) * | 2018-05-24 | 2019-11-28 | Robert Bosch Gmbh | A method for producing an electrode active material, an electrode and an electrochemical storage |
US11695108B2 (en) | 2018-08-02 | 2023-07-04 | Apple Inc. | Oxide mixture and complex oxide coatings for cathode materials |
US11749799B2 (en) | 2018-08-17 | 2023-09-05 | Apple Inc. | Coatings for cathode active materials |
CN109494370A (en) * | 2018-12-12 | 2019-03-19 | 北方奥钛纳米技术有限公司 | A kind of method for coating of electrode material of lithium battery and electrode material containing clad |
US11757096B2 (en) | 2019-08-21 | 2023-09-12 | Apple Inc. | Aluminum-doped lithium cobalt manganese oxide batteries |
US12074321B2 (en) | 2019-08-21 | 2024-08-27 | Apple Inc. | Cathode active materials for lithium ion batteries |
CN114583102B (en) * | 2022-02-21 | 2023-08-15 | 远景动力技术(江苏)有限公司 | Positive electrode active material, electrochemical device, and electronic device |
DE112022000755T5 (en) * | 2022-03-17 | 2023-11-30 | Guangdong Brunp Recycling Technology Co., Ltd. | PRODUCTION PROCESS OF A TIN-BASED LITHIUM COBALTATE PRECURSOR AND ITS USE |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5609975A (en) * | 1994-05-13 | 1997-03-11 | Matsushita Electric Industrial Co., Ltd. | Positive electrode for non-aqueous electrolyte lithium secondary battery and method of manufacturing the same |
US5686203A (en) * | 1994-12-01 | 1997-11-11 | Fuji Photo Film Co., Ltd. | Non-aqueous secondary battery |
US5718989A (en) | 1995-12-29 | 1998-02-17 | Japan Storage Battery Co., Ltd. | Positive electrode active material for lithium secondary battery |
KR100400204B1 (en) * | 1996-05-25 | 2003-12-24 | 삼성전자주식회사 | Lithium secondary battery and preparation method thereof |
US6881520B1 (en) * | 1996-06-14 | 2005-04-19 | N.V. Umicore S.A. | Electrode material for rechargeable batteries and process for the preparation thereof |
US5783333A (en) * | 1996-11-27 | 1998-07-21 | Polystor Corporation | Lithium nickel cobalt oxides for positive electrodes |
JP4161382B2 (en) * | 1997-02-25 | 2008-10-08 | 堺化学工業株式会社 | Process for producing two-layer structured particulate composition |
US6071649A (en) * | 1997-10-31 | 2000-06-06 | Motorola, Inc. | Method for making a coated electrode material for an electrochemical cell |
JP3921852B2 (en) * | 1998-12-10 | 2007-05-30 | 戸田工業株式会社 | Cobalt-coated lithium manganese composite oxide and method for producing the same |
US6428766B1 (en) * | 1998-10-27 | 2002-08-06 | Toda Kogyo Corporation | Manganese oxide, lithium manganese complex oxide and cobalt-coated lithium manganese complex oxide, and preparation processes thereof |
JP2000195513A (en) * | 1998-12-24 | 2000-07-14 | Asahi Chem Ind Co Ltd | Nonaqueous electrolyte secondary battery |
JP2000195517A (en) * | 1998-12-28 | 2000-07-14 | Japan Storage Battery Co Ltd | Lithium secondary battery |
KR100326460B1 (en) * | 2000-02-10 | 2002-02-28 | 김순택 | Positive active material for lithium secondary battery and method of preparing same |
KR100369445B1 (en) * | 2000-04-17 | 2003-01-24 | 한국과학기술원 | Coating materials and method of lithium manganese oxide for positive electr odes in the Lithium secondary batteries |
US7138209B2 (en) * | 2000-10-09 | 2006-11-21 | Samsung Sdi Co., Ltd. | Positive active material for rechargeable lithium battery and method of preparing same |
JP2002175808A (en) * | 2000-12-08 | 2002-06-21 | Toyota Central Res & Dev Lab Inc | Lithium/transition metal compound oxide for cathode active material of lithium secondary battery, and its manufacturing method |
KR100674015B1 (en) * | 2001-02-12 | 2007-01-24 | 주식회사 엘지화학 | Positive active material for lithium secondary battery with higher cycle performance, method for preparing the same, and lithium secondary battery having the same |
KR100404891B1 (en) * | 2001-03-13 | 2003-11-10 | 주식회사 엘지화학 | Positive active material for lithium secondary battery and method for preparing the same |
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KR20030083476A (en) | 2003-10-30 |
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US7235193B2 (en) | 2007-06-26 |
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